Key duplicating device



Aug. 25, 1931. c. M. WELLS ET AL KEY DUPLICATING DEVICE Filed June 18, 1950 I I'll III III [III III 'hesterM VVeZZs and E Zi Cook INVENTORS r Y ATTORNEYS ilarly numbered foridentification purposes.

. Another obj fied form fgaugeapp Patented Aug. 25, 1931 oIInsTER 'MQWELLs ANDELI GdKfOrg AsliEvILLE NORTH oi inotrim fnss enonsr 0F, onn-a'rnmnmo' IfLLni s'rA'li-n ns, or Asnitviigmi,jivorvrirr ozgnotm i Application;fi1ed -J1une 18, 1939. "Serial-1V0. 462,051. 3 Vi r Thiszinvention relates to a-;key;;;'cutting the device andmoreparticularlystoa devieefcone" stituting a gauge, 3 and by means of which alblank key may be accurately. eutiinsorder' a5 to provide'a determined pattern so that it will fit a lock having tumblers .ofva'detem minedchar'acten L "{At the present time keys 'ifor loeksao the Yale type are numberedf'andthe lockszsimth ough the b ock, or z -b y' portion of l key cutter- V ;Thejimprovedkeyl cutting device 2 const g tuting, the subject matter; ,of; this invention consists ;of' -a block or bodyvl which maybe referred to' asjajkeyi and gauge {holder together--- with a? gauge whichqmay; bezcon These gauges; I are, 1indicated IYGSPBCtiXZQlY. byv the numerals 2; 3,,andi4ei it is to A be, under:- The numerals of'thei-numbers indioatekthe sto dathat th se Ie preS'emJ ymS of gauges character of thenotchesforxne'd intheedg Whlch may'pbe used inzeonnection:Withihe of the key and: one-objeet -of the invention"blQQkand that othefrs may befOHHC S bl is to provide a'devieeincluding "a keyholder $911159; therew1t-h.

1 's :11;- 15 and a gauge movable"throughl-ktheiholder i Theqblockllpl orm d f astrong metal dk d with m mbq whereby" the" and. has 1tsi=1oWer portion re ducedain,thioke I gauge may be accurately set-and} cbl nk ness' from-its front faeetheifeby; forminga key cut to form a notchededge 0f a dQS Shank 5 adapted? i i PP bet-wean pattern. By 'this' arrangement a new, key 1 can be easily Inade as it is' only. necessary to read the numbers upon-.1 a lock; and sjuc-v cessively set the gauge'according to the nu- 1merals of the number While filing the new Another object of the invention 'is to so' form the key cutting device that 'thefkey and gauge holder may be secured in;;a{vice1 of a conventionalconstruction thr'eb niminating' useof expensive machinery; g eet of the invention is to'pre- 'vide a device of this character*whieh' is;.very simple "in?" construction," "consists of ;a few number of parts and '5 can" be veryeasily- This invention is illustrated in th panving drawings,wherein-i Figure is a perspective vi the improved key: cutter in usef f Fi ure'fl is an enlarged vievv' of the aug' upon: one; jaw; as; iShQWIl'-;'iI1 Figure .4 me

other} and it should belnbted; that -ther slot 9 iiS' deepen: than: the sloit 5 10 and; has; its upper. end i enlarged Ease-shown :at 1 11- to form a ,mouth ,1 having; :bevelled side walls: serving cause ;-'notehesr, to;- 'b'e cutgrat' a proper angle in an edge .of jazkey 12 when the'zkey is fit-ted intothZslOt 110 as shown in Figures .1. an d: 4 with its. lowerzaedge resting upon. the gauge ening; 1375" is, uforme'd through "the blocksbelowandzparallel 130 theislo't 10 and in sp'acedarelatioii to'one; side of thefopening 6W S159 131are: formedupperand:lowerjopenings 'l l.

e aceom z show n in use in Figurevlj l I Figure 3is aview foiff'a gaugejOme what similar tothe gauge shown in Figure but of a modified construotionif T. [I .f f Figure 4 isv a vieW showing another modi lied to the keya'lgid gauge "holder. v V 1 'eW of the; gauge shown receive a pin17 carried by a resilient; strip This strip118servingjas a mounting for the; pin,

19 through :whichgpas ses the threaded shank 20f Ofi a thumb screw: 21.: uThissthumb screw entersqaythreaded opening 22 l formed in the v blockQarid it will) be freadily understoodvthat Figure ,5 is an in Figure 4;. V Figure-Gris incthekselectedppening 14E orglfii- -:Sineethe jaws 610i?hfvice iluand ajshouldersfiitorest cause the;block.toi-be held7in its proper po sition' l 'slots" 9 and 110' are cutinthe bloek from its" upper-qface at; right angles to each to" limit :the distance; a: fileg. may; enter:uthev it k y j slot andi a-lso serving ztq guidegthe filenand r so I and 15; Thenpening; lfii'receives pin 16 While seitherrof the openings 14 and 1-5 'I'nay w 7 ektendsivertically along a side f r facezofith'e'gblock and-is formedwvithza' slot 7 by; tightening; the "thumb screw the resilient Y strip'may' 'be securedand the pin l7;retainedl I strip is resilient the pin may be drawn outwardly sufiicient to clear the slot 9 and permit a gauge to be set in place, adjusted or removed. A metal washer 22 and a felt washer 23 are provided between the resilient strip 'a-ndside face of the block sotha-t when the screw is tightened the resilient strip will be firmly held in place and the screw pre vented from working loose.

The gauge '2 illustrated in Figure 2 consists of a metal strip of a thickness to be received in the slot 9 and this strip tapers towards one end so that as it is moved longitudinallythrough the slot the distance between its upper edge and the top of the slot varies. Therefore, when a key is placed in the slot 10 and the gauge strip moved the key will be raised or lowered according to the direction in which the gauge is moved and a deep or shallow notch may be' cut by a file reciprocated in the mouth of the slot 9 until cutting is stopped by engagement of the file with the bevelled faces 11. Openings 24 designated by numerals 1 through 9 are formed through the gauge strip and arranged in rows as shown so that when the gauge is moved through the block the open ings of the lower row will successively reg ister with the opening 13 while the openings of the upper row will register with the opening 14. By noting the number upon a lock and movlng the gauge through the block until the opening designated by the first numeral of the number registers with its cooperating opening in the block the pin 16 .can be assed through .tlie registering openings. he key will then be supported at such a height that the first notch canloe roperly filed. After the [first notch has een cut the pin is removed and the gauge slid longitudinally until its .opening having a numeral corresponding to thesecond-numeralof the locknumber registers with its cooperating block opening and the pin again inserted. Movement :of the gau-geraises or lowersuthe key and the second notch can be accurately cut. This is repeated until :a'llthe necessary notches have been cutithereby producing a key which will fit the-lock. Therefore, it is not necessary to remove-a: lock from .a door and take it to a locksmith in extending slot 25 cut parallel to one sideiedge of the strip. Notches 26 and 27.;desig'nated by numerals. 1 through 9 are formed in side edges :of the strip and it should be noted that the notches 126 increase in depth towards I the narrow end of "the strip whereas lthe notches 27 increase in depth towards the wide end of the strip. hen this gauge is used it is set into the slot 9 and the pin 16 passed inwardly through the opening 13 and through i the slot 25. Therefore, the gauge may be slid longitudinally until the desired notch registers with the slot 10 and the keyset in place with its lower edge resting in the notch of the gauge and a notch filed in the upper edge of the key. The key by engaging in a notch of the gauge holds the gauge in .a set position and it is necessary to raise the key in order to shift the gauge before filing another notch in the key.

In Figure l the gauge 4 illustrated in Figure 5rhas been shown in use. This gauge consists of a circular disk having an eccentrically located opening 28 formed therein to receive the pin 16 when the gauge is set in place withthe opening registering with the opening 13 of the block. Openings 29 designated by numerals 1 through 9 and arranged in inner and outer arcuate rows concentric to the disk are formed in spaced relation to the periphery of the disk and these openings register with the openings ltand 15 of the block as the disk is turned about the pin 16. By withdrawing th e pin 17 and shifting the strip 18 after loosening the'screw 21 the pin may be inserted in :a selected. opening 14. or 15 and through an opening 29 in =order to secure the gauge in a set position while filing a notch in a key and the gauge then released and shifted to raise or lower the key so that another notch may "be properly filed therein. The key rests upon the marginal edge of the gauge disk when placed the slot 10 and since the disk is eccentrically mounted a cam action serving toverti-cally adjust .the key takes :place when the disk is turned about the pin 16.

Whi-lewe'have particularly described the elements best adapted to perform the functions set forth, it is obvious that various changes. in form, proportion and in the minor details -.ofconstruction may be resorted to without-departing from the spirit of the invention or the scope of the appended claims. 7

Having described our invention, what we claim is:

1. A key cutting device comprising .a body formed with a key seat opening through the top thereof, a gauge movable through said body in crossed relation to the key seat and extending through the key seat and adapted to support a key with an edge portion projecting upwardly from the body, and means to 'releasably secure the gauge in a set position with a predetermined portion of the key projecting from the body whereby notches of desired depth may be cut in the exposed edge ofthe key.

2; Akey cutting device comprising a body jecting jecting according I formed with key e l g thr iilgh the I to thereof, a ga g movabletthrough b dy transversely f t and, shaving! asloping'upperedge to engage-fa key and support according to thei-p'os'ition -occupied by, the

. 7 gauge, and a pin?slidablefthroughthebody into and out: of'po'sition to engage the gauge and reIeasabIy secure the same in*set'positions whereby notches of desired depthl m'ay' becut in theexpos'ededge of' the key.- I 3AA key cuttingfdevicecomprising a body formed with la key seat, a gauge movable throughsaid' bodytransverselyjof the seat 7 and extending through the seat and having a sloping edge face to engage a key and supporta key with an *edge portion proto theposition occupied by the gauge, a pin slidable through the body into and out of position to engage the gauge and releasably secure the same 1n;v set positions portion of the key to be'ifiled 9 projecting from the body desireddistances,

with an edge and a resilient strip 'toyieldably retain the pin 4. formed with gauge and key receiving seats extending in crossed relation to each other,

a gauge movable through the gauge receiving seat whereby a key disposed inthe key receivin seatand restin u on the vau e' D b D b may be supported withan edge portion .to be cut projecting from the key seat determined distances from thebody, the body having openings formed therein and the gauge having openings tobeselectively registered with theopeningsof the body' as the gauge is moved to'adjust "the distance the edge portion of a key to be cut projects j from the body, and ,a pin engageable through the openingsof the body and key to releasably securethe gauge in a'set'posi tioii. i V.

5. A key cutter comprising a body, said body being .formed, with gauge and key receiving seats'extending in crossed relation to each other, a gauge movable through the gauge receiving seat whereby a-key' disposed in the key receiving seat and" resting upon the gauge may be supportedwith an edge portion to be cutprojecting determined distances fromithe body and means to releasably secure said gauge'in a set posi{ tion. i

-6. A key cutter comprising a body, said body being formed with gauge and key receiving seats extending in crossed relation a to each other, and a gauge movable through the gauge receiving seat and adapted to I support a key in the key receiving. seat with an edge of the key to "be'cutprojectingfrom a key with an edge portion proffrom the body a determined distancefrom the'body a determined distance i in'an operative positionconnected to the outer end of saidpin and secured to said body. f '7 A key cutting devicecomprising a body w e by notches fofi 1 g) r L9Ae key' cutteracomprising a bodyrthe the body determined distan'ces whereby 'a" seriesio f notches of desired depth may be, I

out in the, exposed edge of-the :keyr.

7. fli key' cutter comprisinga'ibodyythe upper portion "of said body-being cut from itsupper end face to f form slotsiextending I in crossed: andw intersecting "zrelation ito each other, one :slot constituting key receiving seat and'the:.-1other-being deeper and consti-Q tutlng; a gaugereceiving slot, OPQI11IIgS bG ing formed through said-bedyr in cross and intersecting; relation to Zthe' gauge receiving slot; axgauge movablein'nthe gauge 'recelv-a ingslot. and iadaptedz-tor engage the lower edge of' -a' key 1 disposed I in zthei key receiving 81 mm support the key with a 5 determined portion proijecting Eupwardly above the bodyancha pin passed through oneiof the open I I ,iplace: a;

ecure, the gauge:

upper portioneofa said body:beingfcut from 7 its upper end-Y faceflto iiorm' slots extending in crossedzand intersecting relation to each other, one slot constituting a key receiving seataand the other% beingldeeper a'nd con-.

stituting' a gauge"receivingi'slotiand a gauge movable through. the gauge: receiv ng slot and adapted to engage 2 the lower edge 0f a key: disposedpzinvthe {key receiving slot and keywith its-supper; wedge pro:

support the jec ting above; the body"determined distances V desired ;depth' rnay I Qf i upper portion of; said :body" being: cut from its upper end face to form slots extending in crossed andintersecting arelation 'toleach other, one; slot constituting? a key; receiving 7 seat and. the other being deeper and; consti= tuting 5 a gauge ;receiving gslot; openingsgbeing formed through said body; in cross and intersecting-relationvito x'the;{gauge receiv g 7 ing zslot ,=ja' gauge 1 sl idable; through the gauge. receivinggslot and formed -with 1 openings to register-: with openings :of the .=body, andg a pin passed rtl1rough=;-registering openings of Y I the body and ga'uge: tor-securex the gauge in positionzto support"thel'keyiwith-1ts upper a 1 edge projecting above the; bodyidetermined distances.wherebyrnotches ofgdesired depth ;10. A- 1key c'utter-comprlsing. a; b,ody, jthe upper portion ,ofysaid; body being cut from itsupper end rate -to.;form slots extending,

incrossedan dintersectingfrelation toeach" other, 1 one slot. constitutingja 1 key receiving threaded intojsaidkbody, a; resilient strip formed with alongitudinatly extending slot receiving said screw whereby the strip may be secured in a set position and :a fixed to one end of said strip and slidably received in a selected opening of the body and engageable through a selected opening in the gauge whereby the gauge releasably secured in, a set position and support a key with its upper edge to be cut projecting from the body a desired distance.

11. A key cutter comprising abody, the upper portion of :said body being cut'froin its upper end face to form slots extending determined distances whereby notches of de-' sired depth may be cut in the key, a longitudinally extending slot being formed in the gauge, and a pin passed through the body and-through the slot of the gauge to v retain the gauge in place and guide and limit movement of the gauge.

key cutter comprising a body, the upper portion of said body being cut from its upper end face to form slots extending in crossed and intersecting relation to each other, one slot constituting a key receiving seat :and the other being deeper and constituting a gauge receiving slot, openings being formed through said body in cross and intersecting relation to the gauge receiving slot, a gauge disk in the gauge. slot having an eccentric opening registering with one opening of the body, a pin passed through the registeringopenings to pivotally mount the disk whereby a .key may be supported in its slot with the upper edge of the key projecting from the body determined distances While being filed to form notches and means to releasably secure the gauge disk inset positions.

13. A 'key cutter comprising a body, the upper portion of said being cut from its upper end face to form slots extending in crossed and intersectingrelation to each other, one slot constituting a key receiving seat and the other being deeper and constituting a gauge receiving slot, openings being formed throughsa-id body in cross and intersecting relation to the gauge receiving slot, a gauge disk in the gauge slot having an eccentric opening registering with one opening of the body, a pin passed through the registering openings to pivotally mount the disk whereby-a key may be supported in its slot with the upper edge of the key projecting from the body determined distances While being filed to'form notches, other openings being formed in the disk and spacedfroin each other along arouate lines concentric to the disk the last mentioned openings of the disk being adapted to successively register with another opening of the body as the disk'is turned about its pivot pin, and a pin to engage through the last mentioned registering openings of thegauge disk and body and relcasably secure the disk in set positions. 1 In testimony whereof e affix our signatures. I I

CHESTER M. ELLS.

ELI COOK. 

